lesson in science

1. SCIENCE 5
WEEK 8 DAY 1

2. Review

3. What are the different modes
of reproduction among plants?
Define sexual and asexual
reproduction.

4. Vocabulary
Estuary
a partially enclosed, coastal
water body where freshwater
from rivers and streams mixes
with salt water from the
ocean

6. Sand/soil

7. Group
Activity

8. Biotic factors are the living components in an
ecosystem. These include all the plants, animals, and
microorganisms found in estuaries such as mangrove
trees, migratory birds, and small fishes.
Abiotic factors, on the other hand, are non-
living components in the ecosystem. These are the
factors that affect organisms in estuaries. These
include waves, salinity, temperature, amount of
sunlight, and type of soil.

9. Waves refer to the movement of the surface of the water. These
are strong forces that organisms must learn to live with. An example of
these organisms is the kelp, a kind of algae, which has strong root-like
structures that attach themselves to rocks to keep it from being carried
away by the waves.
Salinity refers to the amount of salt in water. The combination of
seawater and freshwater in estuaries is called brackish water. Mangroves
and blue crabs have adjusted well to the constantly changing salinity of
water due to the nonstop flow of freshwater and saltwater through the
estuary.
Temperature refers to the level of hotness and coldness of the
water. Temperature differs because of the tides and the amount of sunlight.
Some organisms use plants like mangroves to keep themselves concealed
from direct sunlight or away from the coldness of the water.

10. These include all the plants, animals, and
microorganisms found in estuaries
such as mangrove trees, migratory birds, and
small fishes.
Biotic factors are the living components in
an ecosystem.

11. These are the factors that affect organisms in
estuaries. These
Abiotic factors, on the other hand, are non-
living components in the ecosystem.
include waves, salinity, temperature, amount of
sunlight, and type of soil.

12. Read the poem and make a list of biotic and abiotic factors mentioned
by the author. Complete the table on the board.

13. Assignment
Do a Research. Choose an estuary
animal and plant in which you are interested
to know more about. Create a poster that
shows the interesting facts you’ll find out
about it. You may include the adaptations and
interactions to inhabit in estuary.